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    <script>
        //2：有已知以下某公司员工薪金信息，把每一位员工的salary薪金信息 加 2000，并返回新数组，注意：不影响原数组
        let persons = [{
                username: '张飞',
                sex: '男',
                salary: 50000
            },
            {
                username: '关羽',
                sex: '男',
                salary: 60000
            }
        ]


        let newpersons = persons.map(function (v) {
            console.log(v);
            return {
                username: v.username,
                sex: v.sex,
                salary: v.salary + 2000
            }
        })
        console.log(newpersons);
    </script>
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